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    <center>Scilab Function</center>
    <div align="right">Last update : April 1993</div>
    <p>
      <b>sm2des</b> -  system matrix to descriptor</p>
    <h3>
      <font color="blue">Calling Sequence</font>
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      <dd>
        <tt>[Des]=sm2des(Sm);  </tt>
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    <h3>
      <font color="blue">Parameters</font>
    </h3>
    <ul>
      <li>
        <tt>
          <b>Sm</b>
        </tt>: polynomial matrix (pencil system matrix)</li>
      <li>
        <tt>
          <b>Des</b>
        </tt>: descriptor system (<tt>
          <b>list('des',A,B,C,D,E)</b>
        </tt>)</li>
    </ul>
    <h3>
      <font color="blue">Description</font>
    </h3>
    <p>
    Utility function: converts the system matrix:</p>
    <pre>

 Sm = [-sE + A   B;
      [    C     D]
   
    </pre>
    <p>
    to descriptor system <tt>
        <b>Des=list('des',A,B,C,D,E)</b>
      </tt>).</p>
    <h3>
      <font color="blue">See Also</font>
    </h3>
    <p>
      <a href="ss2des.htm">
        <tt>
          <b>ss2des</b>
        </tt>
      </a>,&nbsp;&nbsp;<a href="sm2ss.htm">
        <tt>
          <b>sm2ss</b>
        </tt>
      </a>,&nbsp;&nbsp;</p>
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